Paper fastening machine



Feb. 10, 1942. N NQLL 2,272,473

PAPER FASTENING MACHINE Filed May 4, 1940 INVENTOR.

ATTORNEY.

Patented Feb. 10, 1942 UNITED STATES PATENT l OFrP'lCE l.12 Claims.

A'This invention relates to improvements in Vpaper fastening machines ofthe crimping type as shown in my application for patent, Serial No.282,834, filed July 4, `1939, and wherein sheets of paper are crimpedbetween toothed dies in a hand `press and thereby locked togetherwithout the use of staples, clips, or other fastenngs.

vThe present invention constitutes an improvement over the one shown inmy above identied application in that it Vembraces the novel andadvantageous features as follows:

1. A -spring link arranged between the operating handle and the leverfor moving one of the dires-into contact with the other die, whereby thedies will lbe yieldably engaged so as to prevent damage thereof andobjectionable mutilation of the paper when pressure `is app-lied throughthe handle, link and lever for forcing the dies vtogether in apaper'crimp-ing operation.

2. A construction and arrangement of the operating 'parts of the machineproviding a self contained fully assembled unit which as such may belreadily removed from Vthe housing vtherefor 'Without becomingdisassembled, by simply removing two pins, and as easily inserted inplace.

3. Two springs for controlling the operation of the machine insuchmanner that one spring serves the purpose of returning the operatinglever `to and maintaining vit in its normal elevated position and thedies separated, while the other spring serves as a lresilient andpressure relieving operating link as aforesaid. v

l4. yA novel construction and arrangement of =the-operating mechanismYwhereby the same will be comparatively inexpensive, consist of but fewparts, and prove reliable in performance over long periods of use.

5. A novel stop means embodied in the operating mechanism for stoppingthe movement of the operatingmembers andthe movabledie when apredetermined maximum crimping pressure is applied to the dies throughthe flexible spring link.

With the foregoing and other objects in view,

ymy invention .consistsinthe particular construe tion of combination andrelative arrangement of the parts and Velements as shown in theaccompanying drawing, described in the following r specification andnally defined in the claims Ahereto appended. It is to be understoodthat minor changes as to size, vproportion and arrangement of parts andelements of the invenltion may belmade as requiredwithout departing4being vdownwardly offset.

from -the speed and scope Vof the invention as set forth in the claimshereof.

Fig. 1 represents a vertical sectional view of a vmachine embodying myinvention, with the parts `shown in the yposition assumed vbefore acrimping operation is carried out;

Fig. 2 is a vertical sectional view similar to Fig. 1 Abut showing theparts -in full lines as during the crimping operation and in dashedlines at .the .completion ofthe crimping operation as when maximumpressure is applied throug-h the die, taken'on line 2 2 of IFig. 3;

Fig. 3 is a fragmentary end elevation of the machine with the handle andother parts in section;

Fig. '4 is a fragmentary top plan -view of one of the dies;

Fig. 5 is a fragmentary longitudinal section of the die shown -in Fig.4; and

Fig. 6 is an enlarged fragmentary l longitudinal section of the two diesas when in operation.

One embodiment of my invention as shown in the accompanying drawingcomprises a-bodyincluding a base 6 having a housing 'l' integral withone end, the housing and base being constructed to form aslot intowhichpaper S is inserted in order that it may be crimped and lockedtogether by means of crimping dies 9 and It.

The die 9 is set in a recess Ii in the base whereas the die I0 iscarried by a lever `|72 in a recess 3 in oneend thereof and adapted tobe engaged With-the die 9 upon movement of said lever. It should benoted that each of the dies has similar teeth I4 extending transverselythe full width thereof and in planar relation to one another wherebywhen the dies are brought together, all of the ,teeth thereof willuniformly and simultaneously mesh, or in other words, mesh, with thepaper sheets rplaced therebetween. The

Adetailed.construction of the teeth does not form subject vmatter of thepresent invention and is more ,particularly brought out and claimed inmy application hereinbefore identied.

It should be noted that the lever I2 is pivoted between its ends in thehousing by means of a removable `pivot pin I5. The end of the leveropposite gthat carrying the die Ill, is pivotally connected as at I6with an arcuate spring metal link I1, in turn pivoted at I8 toan-operating handle I9. This handle is pivoted in the housing by meansof a removable pin 20. The pivot I8 is intermediate the ends of thehandle whereas the pivot 2U is between pivot I8 and the inner end of thehandle, said inner end .Anopeningl inthe housing provides for extensionoperation of the handle for rotating the lever for applying the die I tothe die 9. A coil spring 22 is mounted on the pivot and has its two endsrespectively engaged with the handle and the top of the lever forholding the handle and die l0 in elevated position and restoring them tosuch position.

To operate the machine, paper sheets S are inserted between the dies asshown in Fig. 2 and the operator depresses the handle whereby throughthe spring link l1, the lever I2 is rocked so as to cause the die lll tobe moved to initial meshing relation to the die 9, the parts being thensubstantially in the position shown in full lines in Fig. 2. The link l1is not flexed when bringing the dies together upon said initial movementof the handle, or in other words, when the handle is moved from the fullline position shown in Fig. l to the full line position shown in Fig. 2.

To complete the crimping and paper fastening operation, the operatorfurther depresses the handle, for example, from the full line positionto the dotted line position as seen in Fig. 2. During this movement ofthe handle, the arcuate spring link which, it is noted, is substantiallysemi-circular, will be flexed due to the fact that the dies are engagedwith one another and therefore the dies are yieldingly forced togetherin such manner that the desired paper crimping action takes placewithout damaging the dies or paper sheets. It should be noted that ifthe link were simply a rigid connection of the ordinary type, the diesmight be damaged and the paper objectionably mutilated should theoperator apply heavy pressure on the handle. By arranging the machine sothat the flexing of the spring takes place during the crimping action,the spring, for example, flexing an extent as indicated by the dashedlines in Fig. 2, the pressure on the dies is relieved and the damagingof the dies and objectionable mutilation of the paper are prevented.

As a further safeguard against applying damaging pressure to or throughthe dies, the inner end of the handle is provided with a lug orprojection 23 which when the handle moves into the dashed line positionshown in Fig. 2, will contact the spring link adjacent its upper pivotedend in such manner as to provide an effective stop for limiting themovement of the handle and associated parts. This projection will engagethe spring link in such manner that the said link will not flex butpositively stop movement of the handle.

It should be noted that the lever, link, handle and spring, togetherwith the pivot pins connecting the link with the handle and leverrespectively, constitute an assembled unit which may be readily andeasily removed from the housing by withdrawing the pivot pins I5 and 20.Spring loaded detents 25 engage in grooves 26 in these pins for holdingthem in place. When these pins are Withdrawn, this unit may be liftedoutI of the housing and will not fall apart or become disassembled. Suchremoval may be necessary from time to time in order to clean the die IUor replace it or replace any other part of said unit. The unit may berestored to its assembled position in the housing with equal facility.

One of the important features of this invention is that of employingcrimping dies in which all the teeth uniformly and simultaneously engage or become meshed while the operating pressure is applied through aheavy spring link. This link is suiilciently rigid to insure aneffective pressure between the dies but at the same time yields orilexes to avoid damage to the dies or too great a pressure andsubsequent mutilation of the paper. This spring link arrangement, incombination with a spring for returning the handle to its raisedposition and so maintaining it, constitutes a decided improvement inthis art and makes for a simple, inexpensive, and reliable machine.

What I claim is:

1. In a paper fastening machine: a body, a paper crimping die fixed onsaid body so that sheets of paper to be fastened together may be laidthereover, a lever pivoted between its ends on said body, anothercrimping die mounted on the lever for movement therewith into and out ofpaper crimping relation to the fixed die, an operating handle pivoted onsaid body, a spring metal link connected at its ends with said lever andhandle for rocking the lever on movement of the handle, and a linkengaging portion on said handle for engaging and flexing said linkwhereby the lever carried die will yieldably contact the fixed die.

2. In a paper fastening machine: a body, a paper crimping die fixed onsaid body so that sheets of paper to be fastened together may be laidthereover, a lever pivoted between its ends on said body, anothercrimping die mounted on the lever for movement therewith into and out ofpaper crimping relation to the fixed die, an operating handle pivoted onsaid body, and a spring link connected with said lever and handle forrocking the lever 0n movement of the handle, and yieldingly forcing thelever carried die into contact with the fixed die.

3. In a paper fastening machine: a body, a paper crimping die xed onsaid body so that sheets of paper to be fastened together may be laidthereover, a lever pivoted between its ends on said body, anothercrimping die mounted on the lever for movement therewith into and out ofpaper crimping relation to the xed die, an operating handle pivoted onsaid body, and an arcuate spring link connected with said lever andhandle for rocking the lever on movement of the handle, and yieldinglyforcing the lever carried die into contact with the fixed die.

4. In a paper fastening machine: a body, a paper crimping die fixed onsaid body so that sheets of paper to be fastened together may be laidthereover, a lever pivoted between its ends on said body, anothercrimping die mounted on the' lever for movement therewith into and outof paper crimping relation to the fixed die, an operating handle pivotedon said body, and a substantially semi-circular spring link connectedwith said lever and handle for rocking the lever on movement of thehandle, and yieldingly forcing the lever carried die into contact withthe fixed die.

5. In a paper fastening machine: a body, a paper crimping die fixed onsaid body so that sheets of paper to be fastened together may be laidthereover, a lever pivoted between its ends on said body, anothercrimping die mounted on the lever for movement therewith into and out ofpaper crimping relation to the fixed die, an operating handle pivoted onsaid body, and a spring link connected with said lever and handle forrocking the lever on movement of the handle, and yieldingly forcing thelever carried die into contact with the fixed die, and a lug on saidhandle disposed to engage the spring link and stop the movement of thehandle, link and lever when the handle is depressed a predeterminedextent.

6. In a paper fastening machine: a body, a paper crimping die fixed onsaid body so that sheets of paper to be fastened together may be laidthereover, a lever pivoted .between its ends on said body', anothercrimping die mounted on the lever for movement therewith into and out ofpaper crimping relation to the fixed die, an operating handle pivoted onsaid body, and an arcuate spring link connected with said lever andhandle for rocking the lever on movement of the handle, and yieldinglyforcing the lever carried die into contact with the fixed die, and aprojection on the handle for engaging the link adjacent the point of itsconnection with the handle when the latter is depressed a predeterminedextent for stopping the movement thereof.

7. In a paper fastening machinez'a body, a paper crimping die fixed onsaid body so that sheets of paper to be fastened together may be laidthereover, a lever pivoted between its ends on said body, anothercrimping die mounted on the lever for movement therewith into and out ofpaper crimping relation to the fixed die, an operating handle pivoted onsaid body, and a spring link connected with said lever and handle forrocking the lever on movement of the handle, and yieldingly forcing thelever carried die into contact with the fixed die, and a spring forreturning the handle to elevated position.

8. A paper fastening machine comprising: a body, a paper crimping diefixed on said body so that sheets of paper to be fastened together maybe laid thereover, a movable paper crimping die for cooperation with thefirst-named die, a movable support for the second-named die mounted onsaid body, a handle for moving said support to move the die thereon intoand out of crimping relation to the first-named die, and a tensionmember forming a connection between said handle and said movable supportand operable for yieldingly forcing the movable die into crimpingrelation to the other die.

9. In a paper fastening machine, a body, a fixed paper crimping diethereon, a movable paper crimping die, and means on the body for movingthe movable die into and out of crimping relation to the other die,including a handle and a tensioned member operatively connecting saidhandle with said movable die and arranged whereby said member will flexand relieve the pressure on the dies when the handle is operated toforce the dies together.

10. A paper crimping machine comprising: a stationary die member and amovable die member between which paper is gripped in a crippingoperation, an operating handle and a tension member operativelyconnecting said handle with said movable die member whereby when saiddie members are effective for crimping paper, the inherent tension insaid tension member will urge the dies from crimping position and meansindependent of said tensioned member for urging said handle to normalposition.

11. A paper crimping machine comprising: a frame having a base with astationary die mounted in crimping position thereon, a movable diemember cooperating therewith and having a fulcrum rearwardly of saidstationary die member, an operating handle pivotally mounted on saidframe and having an axis spaced from said die member, an arcuatelyformed and normally rigid resilient link connecting said movable diemember with said handle, a spring for yeldably holding said handle andmovable die in normally inoperative position, said spring being furthertensioned when said handle is depressed in a crimping operation, andsaid link being tensioned during further movement of the handle foroperatively engaging said dies with the paper to be crimped, the tensionof said link serving to urge` said dies apart at the completion of anoperation. 12. A paper crimping machine comprising: a frame having abase with a stationary die mounted in crimping position thereon, amovable die member cooperating therewith and having a fulcrum rearwardlyof said stationary die member, an operating handle pivotally mounted onsaid frame and having an axis spaced from said die member, an arcuatelyformed and normally rigid resilient link connecting said movable diemember with said handle, a spring for yieldably holding said handle andmovable die in normally inoperative position, said spring being furthertensioned when saidhandle is depressed in a crimping operation, and saidlink being tensioned during further movement of the handle foroperatively engaging said dies with the paper to be crimped, the tensionof said link serving to urge said dies apart at the completion of anoperation and means associated with a portion of said handle engageablewith said link and forming a stop for the movement of said handle.

NORMAN S. NOLL.

